php生成密保卡

[PHP]代码

<?php
/**
* Author:       wonli
* Contact:      wonli@live.com
* Date:         2011-09
* Description:  getvcode()
*/
$st = microtime(true);
function getvcode()
{
    $s = array();
    $str = &#39;3456789abcdefghjkmnpqrstuvwxy&#39;;
    for($k = 65; $k<74; $k++)
    {
        for($i = 1; $i<=9; $i++)
        {
            $_x=substr(str_shuffle($str), $i, $i+2);
            $s[chr($k)][$i] = $_x[0].$_x[1];
        }
    }
    return $s;
}
$s = getvcode();
$b = serialize($s);
echo &#39;<style type="text/css">table{width:350px;height:350px;border:1px solid blue;margin:20px;border-collapse: collapse; }td{text-align:center;border:1px solid #dddddd;} .b{background:#ffffee;} .c{background:#eeffff;}</style>&#39;;
echo &#39;<table><tr><td>  </td>&#39;;
for($i=1;$i<=9;$i++)
{
    echo &#39;<td class="b">&#39;.$i.&#39;</td>&#39;;
}
echo &#39;</tr>&#39;;
foreach($s as $k=>$v)
{
    echo &#39;<tr><td class="c">&#39;.$k.&#39;</td>&#39;;
    for($i=1;$i<=9;$i++)
    {
        echo &#39;<td>&#39;.$v[$i].&#39;</td>&#39;;
    }
    echo &#39;</tr>&#39;;
}
echo &#39;</table>&#39;;
echo &#39;<p style="margin-top:20px"></p>&#39;;
$et = microtime(true);
echo round(($et - $st) * 1000, 2).&#39; 毫秒&#39;,&#39; <a href="?view">查看</a> &#39;,&#39; <a href="?close">关闭</a>&#39;;
if(isset($_GET[&#39;view&#39;]))
{
    echo &#39;<p style="margin-top:100px;"><textarea name="" id="" cols="130" rows="10">&#39;.$b.&#39;</textarea></p>&#39;;
} elseif(isset($_GET[&#39;close&#39;])) {
}

[图片] scode.bmp

[PHP]代码

function getvcode()
{
    $s = array();
    $str = '3456789abcdefghjkmnpqrstuvwxy';

    for($k = 65; $k<74; $k++)
    {
        for($i = 1; $i<=9; $i++)
        {
            $_x=substr(str_shuffle($str), $i, $i+2);
            $s[chr($k)][$i] = $_x[0].$_x[1];
        }
    }
    return $s;
}